Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd089d425a5b3c4a8180095db692339e749b4ca2098849ad46d1348b04e5bee34' 
  AND token = '/s4nDLOTT11rOqiNots0a5IVUbPNTjTvsNYEWLeoG5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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