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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ecbe07baa063da9d6a1653114db6881be9398bc4d48e5c98332d2201f92105fb' 
  AND token = 'JtogVikF31KS5hfDYwL4Ar7DjyzU17Pu8bUeSO16uCw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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