Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea38415fd88a899c7389ce29603d269a8c22ada22797a34f33e64f42cbbc987f' 
  AND token = 'ea3YhxrpRlgj/0nWX3GxVssBxawb1bqHB2O1BlhD+LE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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