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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8fda003b4977c672a8c3edad3cd7d6cd5460d97329b2e1914b0326968384dab5' 
  AND token = 'wrdEC0i0kB7TXeECBMeL9KItydsk/Xb+SVNWQx1xaCs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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