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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01c7f8f9c513f04cb9097339b21ac4ea2b1709803ed7c665f5ca6ad93ca987ef' 
  AND token = 'Ut4/5o0e/Nu2fjnZVMcE5v7BRxlTNb3PM4MgbAc/mtI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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