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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'afe814d4984ef78620b04f6273e4af759c2734619fc6fbc1ca3c535ecefcb9be' 
  AND token = 'G1fsQm9dC6kvA2+J4zUHLUNMg1x3p2SMU5lPCbVLFfU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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