Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '113b421ec1d41ebec21979e80e980ecdfce186687db77a7c9f97aa1b27b2e02b' 
  AND token = 'H6nj5STHluqJwLv+Oh4apitwibvVhFosJ/o/08w/SBY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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