Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e3419648b3b8e595e1064f2c462cd47143698bac0b5c9ec56c444791e21aa964' 
  AND token = 'epGdvklr8oth1oFTPthaD5l3/4REaiYfAr3PvatnS40=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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