Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f109e7e8c4b383ae8272919f96816b5174a00748cef608474f38847140830b6' 
  AND token = 'o+9sLYEthtGimo8Qf+oFdulbvnF7L476aptSR8EAKiU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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