Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9f0b56a570a6edf7f8b0375daac862663b45d92ca0d9bf68b9eb0331b2116339' 
  AND token = 'Ujr8+KViH78PBcOI5ebbkvuZoPeuMM8+BPPM620qV0Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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