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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a323fca93909ee30a662c38393312b73a2f6d34d6db9be05953e1c2127ef7537' 
  AND token = 'bcHf9ucrycTCTXn7twFMu5yul1b2qj7VL8OMdghTooQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}