Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13a34d6244868ee2143368b28fed54caf77614ccbb3609d5da6536c62ecfabd0' 
  AND token = 'cDp+61mlFvzv7NXPufkDoxRhVfA9rzyCBDRBP6CpihQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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