Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd695390710de75f35c315187ab8cb84812a7a0830ed05f9845ecb218ddf610a9' 
  AND token = 'b/nCpkOZKaZRTwsMQiPwoLELr0yYBwBobauLmUfG970=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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