Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64a47ae233ce8d2076adc25fc7c1fa01a7c9bd492ddebdf47782a60e1b47c5ad' 
  AND token = 'qbKzAoAFuFDNtNgXEvba92C+GdBAEnegLXxx3Ek2kLM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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