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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a1cf7022ef00424f5853ace1a07eb037c04f6ebe4dcd49ab2fce57dffd330d63' 
  AND token = 'IoAV9jaXPSc0BK41/WQ5/5ghUyRPxxol5Y/7R8glP5Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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