Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '4ce47aa345de6801ad4b99d579e9001af7054d1b2233da84ce6bfec8be27d187' 
  AND token = 'OfoAtE9eRsevErJIGLxtLlNOHDR69XKUjWkNGmp1WA4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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