Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0cae045451b9ef7ea0f2d88b18402c7dca97e0d885228f68d05953043a63b0c6' 
  AND token = 'FmDJ2k5CAnGBkV7Qu+ir20/Xn6KRgnpSShG2yZwQGTM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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