Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'daf6f4a3b6984261e7683f5ae9d994af87e7621cb3f420a99f371d7a0441526d' 
  AND token = 'NSmkeMKjwtcPmos0UmIZL/CuZjIxPgVt57m+We2KCNk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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