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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e3376ef391f5301667e590d6d2ff7fdeab8d524d7033c016c67925fb37bc2fb9' 
  AND token = 'uOo0kpimLc1/jtgTknRa73D7TDinAXlfy8I7RSYmq/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.07186

JSON explain

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