Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fafb7e60aec29a891fb9913cd12d4c971fefe74576e6a73710162559444234bd' 
  AND token = 'ub8zyGB9wm3GS/kzPQbv3HumI4azSh6t0G/cWBiPJvE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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