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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd979a69ea223cba5fe4dd743c12272dfc9bbca87424a3a6e06c13018193643ce' 
  AND token = 'L65baeJUqpYBQW64zV84RQ9cEwu9ZktoqdJy1ps2VbA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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