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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e53b5c84b3bcac563047de72f152156b8c59ec50053f1af5d4b599f0ac08e86' 
  AND token = 'dLXGqNQ66J5Mb/tszH88JqV23LpBxbXv8/dEIw4BVtU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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