Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1c55a42616da547747a450e21a98b94ab89d668b04746fbc5da89e65092066c' 
  AND token = 'zP0Y8oXVKrBggCsHA4mSOzabr60/Zd0jaKi0X5c+Lio=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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