Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '934d0da01936c20e9cb8fce5e16f05bc74c4f170b83f44d51008feb1db33221f' 
  AND token = 'sJhyvQ9J3LPfPo0meUlfezRfFTl/cUxm9T+dCy5ofHA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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