Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63c8daea0807100dc88965c2be3fcb6c0a951af770d998a77569e77e9a2c1f66' 
  AND token = '4AicN3UbihD0AvTJYmKqZ6GTIr49uB2Rd7ky9Lq2L7Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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