Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f63d93b7dd3fa0d6f6ae8c2cd7715068a8eb945b9949ba5776a0f696b68a096d' 
  AND token = 'p95XfOy0rio4b9m1p/ZiA4c9fp+lM8TKY6ZeopB9cBE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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