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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0154f5d1aa12f44bd8c6940ad6f7527acc643ef2cd487fdd4962f46f68872ac' 
  AND token = 'OhofoBgn1zYUMTlWWjbqmxRu6sqoIT/vr2EOMq7QVFM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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