Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ed901c4c15b29ea4d57c8b8b0eef91366488df40b543e9a8eeea991d49aa2c5' 
  AND token = '8GKLQWZDJke9dT+rZXiZXbyu9L0O6MxKw8mHznNQZ7M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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