Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5433d5dc01597de35c25ed0a4617da62d95f388bffafea20e99d356d83a931b6' 
  AND token = 'w3W70HH0ZYErzPSlBNu5lbs18PGJHcKf3IHeqwt19Ds=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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