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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '65228fed408dc0dbe9fbebb92b1312d49406c852eedab43944bcfb451024e9fe' 
  AND token = 'gvSD++x+hFgVovj/o+TsR4uDJkAxbWwYQffcdvM/xFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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