Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ced125a8196d2416098a1ce020f8e2ca8a0a606c30a4e93a6f925fbca368f7fc' 
  AND token = 'nXfgQC6f00dX9+5+NtU4auWTkKapjDMrvuXrxaawblg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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