Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0cfbbf10af6e5405569e081e3a0b1028b7543bce8e1f9d2d64908f854ee3ae0d' 
  AND token = '0NuraWWWCebg00anBV2tHC0b4Fv8mcLiyYZk3ufYtAk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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