Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8e9178d1320aa15dd1971d111af7a4e27609bc1002908e32dca532bc09356b72' 
  AND token = 'gg9UbIBWKUcJYzq9eUvo4GOXF0ld2x3jqUk+ulUdcPc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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