Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '52029618d1d29fdc5bd16ac903d9f59f4e3af28c57c77af4136c685fc448f075' 
  AND token = 'sZ/TBCTM2tEo81/ILtH2/MS6g5lAKLVD6s4mQ7ODm5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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