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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54054d0cf53c87ad6d9025e2c7e9b08f73b3595eb7b2fa829118c63f2b6a4b9c' 
  AND token = 'ToDVST5x0ezIXzz0fgrcxgYwD4UcCwlQFgDMG/dN20Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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