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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'f22ee741eed38110bb830423a4239db8b0e72d1a27e7f8e9914d151df267a4e1' 
  AND token = 'SGtcdXwqi2VofoO4iKt45emDQDmP6YaW3mxKQAglk8A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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