SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02ed6c11966f6ca603c67e54def2b80ca9193c45cb29e9d6bca87e21aee8b44e' 
  AND token = 'h3DqovLRRXVQ9g1Lg8diSCI3rlRGjuDh5zKjO4+XZnw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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