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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59eedd7671e3ff6513c99ebab2080c1dd010eeca74b4cc2fde690ea2ace91668' 
  AND token = 'VzRpJsKNut+l8uFxuxQwwL76+G1gmxTHEHNEaCxpvtA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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