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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ffa7220b8367c11d5dc9e263e4bfe934feaab26bd260a1f1d35538135fcf060c' 
  AND token = 'dlJVq30FOWMMscTEJg/9s7Lb0qtxnsX18fwrZJbH7ws=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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