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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8aaf1d1327120f01d8f93d8f3cb7d1d3565d5c678578847b4e99155e92e666e2' 
  AND token = 'dpl6DUcQy5mmg65EUN8grglWnkdoorj4+UW9RhJm5KQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00157

JSON explain

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