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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '10a9387b8078b03d03e183d78cfeed726a0c96e87368fa780101616b41f0f858' 
  AND token = 'ex/IbjWa+dCEeJtHWUJ70pLUEbaWJyWUyfSYM7V1pVo=' 
  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"
    }
  }
}