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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aabd3ca1a587378cc5f1f25b62442194542342032fad533b02402c840e5fa524' 
  AND token = 'Ogr29CqGnLSUyIlBI8hNN9v4MAvQ4K0P7kPtTRAGPRM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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