Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f7504423b7e9f2f7ef61a46a9c1f9c4dccc4f846c5a1fc6a77385075038ed7aa' 
  AND token = '1fBylHEcaHzDGqvl56PWu6povCVZFS1dl2RICKI6xLw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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