Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65cf04fbba2638eac7d8696b83008257dd3a352b80651ec795679d7d597d507b' 
  AND token = 'OngI7Ug7gTu5SSdorYL3LnDimMoHDpVj6a7uoB990vI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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