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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '601054982844989a2535c90bca8f27cee27525d25e25ab1fb536fb2c91d5cca4' 
  AND token = 'm9c4K7H0rl8cAHxeAK6mZJDh5ZkFstmJGuRjCqlW8KM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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