Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9544764d28195287b0cec6797bf5ac34eb2a3a7fb4fb6edc09406c256a7bc13a' 
  AND token = 'wKd83SXINi1deo0m8EQNR08livrMuXcrbk0e+elY2wU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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