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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'ca649535eb036d96bbd252b5d60afca198e160ac33c785bdfd5a0bdd8d97a849' 
  AND token = 'hYfF506zhbl0bksxJgoLBa9iyCUyYuTTjzD8DsyS2io=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}