Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67c1ea308d66ca4a79bc6f17bd328c17f352217286b69089f449d20575bffa7a' 
  AND token = '4anrcV0DU+MxhrcOG6Thu/h1SprnDsMoNZZPaExgrGY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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