Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '731245b2e732c7a80446d54be2f7e81a721fa9a6dd0add5758ec89c2f2739816' 
  AND token = 'woeB0i2afJV8MfrP3BzauiVEN5tFpkmmkOd1RWBwFwM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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