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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e2c33c9f6240060930b2bbd9dc6ddbd89ef0fca03a7c425c871b464347097bb2' 
  AND token = 'HcWqIiSxk0yOkX5ETx6fQ+Xl43JZP/IDBalHPT0gjKY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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