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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63b0ae0d9cb2f17c0b0c769dac2f13cb3c7ef25ebf032cd26c5e0cf0bbfcef40' 
  AND token = '3DzEjLf36kJoUZgFtjDxADwde4EfbLeLCjKnSXo475o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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