Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '144af1f48901b79d140a0b7155f12bc6b6d99755127ae90328da8f9e47146698' 
  AND token = 'Sc7Vu5ea7UiERlp9PiGxzUZT2IL1TfzO+/vn+Q4Dkeg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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