Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a2dd97c8d44d4a4458fb34c7fbcdc7af4bb033ac5baf4e38ef31e48c7011b707' 
  AND token = 'lj8C+Ztl878jCi/53swETrlDtYATFdEzRuShHIlOhQw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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