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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fdd48912c27e6d9bccc48146105333c44b893057449e68c51c016d1c5ce7f3a7' 
  AND token = 'fwFxzRyDC4l9yALga1a66dmNl3mraiRa03UIIa5shnE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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