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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d1bf7408c476d999f5dfb70723f87b06ccc5aae3425fd4e172fef8a240228ed' 
  AND token = 'wKITfvlcGUa5Rpcm0QxcGWYb4I3pilnwoOaDGiGAawQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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