Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3efdee783f4f817b167f54aec0b6ee7045d80a61ac9b46e9cd155a99f70bfea7' 
  AND token = '0bz/Eo/Blv2lExZ7m/ZkNRyb06vV7LqP/lNArcysoTg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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