Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5989b802d64e91ad5c711b5cbdad6326202ec2e5f5cca2ae8daba0819594824b' 
  AND token = '1AYi2f1Linwku5D1eiwtSc2sWkoU9gjkY4JboxL3qNk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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