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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7045e9011ee21171652ed7ac9e38fe269d46a491eafe0201dc27ea355a205ff0' 
  AND token = 'k/5a53PLD+Cg8Y4Kml4TNGZgqLXfW+T7YXcVFDZ9reA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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