Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '57d4789209c9f49750a2f21d72eac97a1f96bbc99e8d0cf35acf1494363e898a' 
  AND token = '6nKXxITSOb7Oc/YVxHzv7H6tEn/Tc/6NaSzai58OMeQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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