Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c7d49f60ea9f1318b10d23b29ecd84fc4eed8a0d577aaf1338689df6ea5e1f4' 
  AND token = 'CxezFs77drcSnnroO17chTVpowhxzduShfXO6eFj34g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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