Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c32fc4845c882f977c78446601c100eabb49851d6b7c0c07636cf43811d73ef2' 
  AND token = 'n4fJE8lCXn9Neig0IppHfzt40ODAyewFpLAcs+KB8KQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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