Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e851bf0e178daac4a259ea0d05e47b463c4bf630912cf2fc858ed6a8d1884701' 
  AND token = 'fKkmDNHgiF3HMCZ5A4N2HwoUd10M2iYR8dJ7xNESJmA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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