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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd06577031a7083e5ca3044e9e59f41e8aa8ebbbfd14393040115693b91c81318' 
  AND token = 'pNn6E0tflpyOYfcbdS4mtbl+nUIZ8VnUUMjJu8u5C6o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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