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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9cffa2441307e82a674939eac6bf334978c17d3670ce64babfa8cf6cc1007c70' 
  AND token = 'GEOPNNT1AQfKt4iumx32z83F4H9maeCrzeJln7w213s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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