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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32dc4801fd4c094f98192e6e0d3ce9578bfa56c563931f881a7ba1dd8b516ebb' 
  AND token = 'lUrclxk6cGE7Tx/SPSu7bZz3Z1Yp4mOPROziOOf0NCM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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