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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bedf7e5266a1bfd495b16aa6bb1418a03c7efc29f5a2a4776f0ff42026e7eea6' 
  AND token = 'xR43vThc0SVOu8dAqx5cqKDPtGk6xhxlVwy3qg+J70A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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