Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54a93817494a0f50b00a300b3c974f1e14d31719b75cacdd90ce7032d9fd2c64' 
  AND token = 'vo3Aq9N9L2CixRNN+M79alzKyHJrX0vifOz41bKIrCI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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